On 27th of February, Alvaro Herrera committed patch:
Allow BASE_BACKUP to be throttled
A new MAX_RATE option allows imposing a limit to the network transfer
rate from the server side. This is useful to limit the stress that
taking a base backup has ...

In previous post in the series I wrote about how to interpret single line in explain analyze output, it's structure, and later on described all basic data-getting operations (nodes in explain tree).
Today, we'll move towards more complicated operations.

On 12th of February, Robert Haas committed patch:
Teach ALTER TABLE .. SET DATA TYPE to avoid some table rewrites.
When the old type is binary coercible to the new type and the using
clause does not change ...